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Karnatak, A. K.
- Influence of Synthetic Plant Growth Stimulant, Miraculan on the Survival and Development of Spodoptera litura (fab.) (Lepidoptera: Noctuidae)
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Indian Forester, Vol 138, No 12 (2012), Pagination: 1160-1163Abstract
Plant growth stimulants 'Miraculan' gradually decreased survival of the larvae of Spodoptera litura from 86.67 to 46.67 per cent at 3.22 to 100 ppm. Similar trend was also observed in adult emergence. Growth indices were lower in all treated diets as compared to control. The results of the experiment showed that artificial diet fortified with different levels of Miraculan (plant growth stimulant) has adverse effect on the survival and development of Spodoptera litura. Reduction in per cent pupation, adult emergence and larval survival of S.litura indicates the role for these growth regulators in IPM.Keywords
Spodoptera litura (fab.), Miraculan
- Evaluation of Toxicity of some Novel Molecules of Insecticides against Spodoptera litura (FAB.)
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Authors
Affiliations
1 Forest Protection Division, Arid Forest Research Institute, New Pali Raod, Jodhpur, Rajasthan, IN
2 Forest Protection Division, Institute of Forest Productivity, Ranchi, IN
3 Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand, IN
4 Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand
1 Forest Protection Division, Arid Forest Research Institute, New Pali Raod, Jodhpur, Rajasthan, IN
2 Forest Protection Division, Institute of Forest Productivity, Ranchi, IN
3 Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand, IN
4 Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand
Source
Indian Forester, Vol 139, No 11 (2013), Pagination: 1024-1026Abstract
An attempt was made to assess the toxicity of some novel molecules of insecticides against Spodoptera litura (Fab.). The dose mortality response to the 7 d old larvae of S. litura indicated that spinosad at 24 h was 4.773 times more toxic than cartap hydrochloride at LC50 value. By the lapse of time this ratio further increases to 82.5 at 48 h and 71 times at 72h. The relative toxicity ratio (RTR) of novel molecules at LC50 value in comparison to cartap hydrochloride at 24h and 48h were: spinosad (4.77, 9.9)> fipronil (1.59, 3) and at 72h the values were spinosad (10.14) and fipronil (2.54). LC50 values of cartap hydrochloride, fipronil, spinosad, as 0.44% and 0.126%; 0.0418% and 0.079%; 0.004% and 0.0264% respectively at 24 h.Keywords
Spodoptera litura, Novel Insecticides, LC50 Values, Dose Mortality ResponseReferences
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